C# IEqualityComparer nedir A Gizli Silah

C# IEqualityComparer nedir A Gizli Silah

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If you do decide you need a comparer, you yaşama certainly use a generalized comparer (see DMenT's answer), but if you need to reuse that logic you should encapsulate it in a dedicated class. You could even declare it by inheriting from the generic base:

Expose via static property — makes the comparer class private and generates a static property that exposes the comparer class to consumers.

If either Player instance is null, then we cannot compare the two usernames. The two players cannot be equal.

I would like to get distinct objects from a list. I tried to implement IEqualityComparer but wasn't successful. Please review my code and give me an explanation for IEqualityComparer. public class Message

The IEqualityComparer interface supports only equality comparisons. Customization of comparisons for sorting and ordering is provided by the IComparer interface.

You have to change the comparer to also check the new properties. You could achieve this by using reflection but that would make your comparer insanely slow.

Kontralaştırmalar koleksiyonun öğeleri beyninde yahut bir öğe ile belirtilen bir porte arasında kabil. C# IEqualityComparer nedir Nesneleri karşıtlaştırmak sinein ve default comparerexplicit comparerkavramı vardır.

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Going with your example, say that you wanted to compare the objects ignoring case, so that C# IEqualityComparer Nasıl Kullanılır "Apple" and "apple" would be considered the same object. Then your ProductComparer may C# IEqualityComparer nedir look like:

What would you expect the type of positions to be? Birli compiler deduces from argument given to Distinct which implements IEqualityComparer, the type of the expression is IEnumerable.

Örnekte, kullanıcıların eşit olup olmadığını arama ederken kullanıcı adları dikkate münfailtır.

Yeni bir referans tipi bileğişçilikkeni oluşturulduğunda, yalnızca bir referans oluşturulur ve bellekteki bilgi bu referansın gösterdiği yerde saklanır.

The main use of this interface is you can write a single implementation of IEqualityComparer which several classes can then use, removing the need to rewrite the comparison logic for every class.

When implementing interfaces of classes it is important to read the documentation, to know which contract C# IEqualityComparer Temel Özellikleri ve Kullanımı you’re supposed to implement.1